mine came standard with a giant adjustble post, but they forgot to fit the seat height for me. went back a few days later and the seat was too low so they put a revirb on there (longer). I could have changed to a bigger bike the rest of the geometry was good.
reverb post seems better quality than the giant ones. probably heavier tho.
I thought it would be great but I dont use it as much as I thought I would. Good on BMX track and really hard downhill stuff but most downhill I leave.
Loving this sport though - so good to be able to say I will go at 4pm on tuesday for two hours and do it, not wind dependant! and more fun than I expected!
Dont know how to link photo but
www.giant-bicycles.com/au/trance-x-29er-1-2013oh I got tubeless tyres after a flat. low pressures make it feel heaps better on our super rocky trails. can absolutely hook down the single track.